Utility knife



FIG. 1 is a Perspective view of a utility knife showing my new design;

FIG. 2 is a Front view thereof;

FIG. 3 is a Rear view thereof;

FIG. 4 is a Left side view thereof;

FIG. 5 is a Right side view thereof;

FIG. 6 is a Top plan view thereof; and,

FIG. 7 is a Bottom plan view thereof. 

The ornamental design for a utility knife, as shown and described. 